Provided is technology for effectively removing fiber from a mesh belt. A second web former for conveying a second web containing fiber deposited on a mesh belt 72 having multiple holes 72a has a brush roller 710 with numerous bristles 712 protruding from the surface and disposed in contact with the mesh belt 72. The sectional area of the bristles 712 of the brush roller 710 is smaller than the open area of the holes 72a in the mesh belt 72 so that the distal ends of the bristles 712 can enter the holes 72a.

[Problem] To provide a canvas cleaning device that can prevent re-adhesion of stains as much as possible and also efficiently clean the canvas. [Solution] The canvas cleaning device 100 is provided with a base part 11 capable of sliding along a rail part 1 that extends in a width direction of a canvas K1, a cone part 13 having a cylinder shape, which is attached to the base part 11, and extends straightly, a high pressure water spraying device 13a installed inside the cone part 13, an arm part 15 that is extended and installed on the downstream side from the base part 11 and a nozzle device 16 attached to the tip of the arm part 15, and in this structure, high pressure water is sprayed onto the canvas K1 from the high pressure water spraying device 13a inside the cone part 13.

[Problem] To provide a canvas cleaning device that can prevent re-adhesion of stains as much as possible and also efficiently clean the canvas. [Solution] The canvas cleaning device 100 is provided with a base part 11 capable of sliding along a rail part 1 that extends in a width direction of a canvas K1, a cone part 13 having a cylinder shape, which is attached to the base part 11, and extends straightly, a high pressure water spraying device 13a installed inside the cone part 13, an arm part 15 that is extended and installed on the downstream side from the base part 11 and a nozzle device 16 attached to the tip of the arm part 15, and in this structure, high pressure water is sprayed onto the canvas K1 from the high pressure water spraying device 13a inside the cone part 13.

Methods are provided for improving the papermaking process. In various embodiments, the methods include the application of alkali material in combination with an anionic polymeric dispersant and/or a hydroxyfunctional carboxylic acid to papermaking fabrics such that the application thereof removes contaminants from the papermaking fabrics and improves the drainage of said papermaking fabrics. Such alkali material in combination with an anionic polymeric dispersant and/or a hydroxyfunctional carboxylic acid can be applied as a single aqueous solution, and may further comprise a surfactant.

Methods are provided for improving the papermaking process. In various embodiments, the methods include the application of alkali material in combination with an anionic polymeric dispersant and/or a hydroxyfunctional carboxylic acid to papermaking fabrics such that the application thereof removes contaminants from the papermaking fabrics and improves the drainage of said papermaking fabrics. Such alkali material in combination with an anionic polymeric dispersant and/or a hydroxyfunctional carboxylic acid can be applied as a single aqueous solution, and may further comprise a surfactant.

[Problem]

To provide a canvas cleaning device that can prevent re-adhesion of stains as much as possible and also efficiently clean the canvas.

[Solution]

The canvas cleaning device 100 is provided with a base part 11 capable of sliding along a rail part 1 that extends in a width direction of a canvas K1, a cone part 13 having a cylinder shape, which is attached to the base part 11, and extends straightly, a high pressure water spraying device 13a installed inside the cone part 13, an arm part 15 that is extended and installed on the downstream side from the base part 11 and a nozzle device 16 attached to the tip of the arm part 15, and in this structure, high pressure water is sprayed onto the canvas K1 from the high pressure water spraying device 13a inside the cone part 13.

[Problem]

To provide a canvas cleaning device that can prevent re-adhesion of stains as much as possible and also efficiently clean the canvas.

[Solution]

The canvas cleaning device 100 is provided with a base part 11 capable of sliding along a rail part 1 that extends in a width direction of a canvas K1, a cone part 13 having a cylinder shape, which is attached to the base part 11, and extends straightly, a high pressure water spraying device 13a installed inside the cone part 13, an arm part 15 that is extended and installed on the downstream side from the base part 11 and a nozzle device 16 attached to the tip of the arm part 15, and in this structure, high pressure water is sprayed onto the canvas K1 from the high pressure water spraying device 13a inside the cone part 13.

An apparatus for cleaning a felt in a system for producing a paper web has a device for introducing a cleaning liquid into the felt and at least one following suction device in the direction of movement of the felt and having a vacuum duct, through which the cleaning liquid is suctioned out of the felt. The suction device between the vacuum duct and the felt is formed with suction ducts, through which the cleaning liquid in the felt is suctioned away. At least one of the suction ducts is assigned an inflatable valve element. In the inflated state of the valve element the suction duct is closed and in its ventilated state the suction duct is opened.

A method is disclosed of facilitating the removal of contaminates from a belt in a papermaking system. The method includes the step of providing a fluid in a shaped fan such that the interface between the fluid and the belt is non-linear and at least generally forms the shape of an arc.

A method is disclosed of facilitating the removal of contaminates from a belt in a papermaking system. The method includes the step of providing a fluid in a shaped fan such that the interface between the fluid and the belt is non-linear and at least generally forms the shape of an arc.